Farrell had already planned on giving Victorino a rest in Thursday's series finale because he's started the past three games.
The Red Sox have been conservative with Victorino as he battles back from the back surgery that sidelined him for the final two months of last season.
"He's got some right hamstring tightness on the stolen base. Given what he's gone through, I got him off his feet," said Farrell. "It's not more serious. It's day to day. He was scheduled for a down day tomorrow, so it's likely he'll be out and available but not in the lineup tomorrow."
Victorino is off to a slow start offensively, hitting .143 with no homers and two RBIs.
Allen Craig replaced Victorino in Wednesday's game. Daniel Nava is likely to get the start on Thursday.
Ian Browne is a reporter for MLB.com. Read his blog, Brownie Points, and follow him on Twitter @IanMBrowne. This story was not subject to the approval of Major League Baseball or its clubs.